743 research outputs found
Multi-wavelength characterisation of z~2 clustered, dusty star forming galaxies discovered by Planck
(abridged) We report the discovery of PHz G95.5-61.6, a complex structure
detected in emission in the Planck all-sky survey that corresponds to two
over-densities of high-redshift galaxies. This is the first source from the
Planck catalogue of high-z candidates that has been completely characterised
with follow-up observations from the optical to the sub-millimetre domain.
Herschel/SPIRE observations at 250, 350 and 500 microns reveal the existence of
five sources producing a 500 microns emission excess that spatially corresponds
to the candidate proto-clusters discovered by Planck. Further observations at
CFHT in the optical bands (g and i) and in the near infrared (J, H and K_s),
plus mid infrared observations with IRAC/Spitzer (at 3.6 and 4.5 microns)
confirm that the sub-mm red excess is associated with an over-density of
colour-selected galaxies. Follow-up spectroscopy of 13 galaxies with
VLT/X-Shooter establishes the existence of two high-z structures: one at z~1.7
(three confirmed member galaxies), the other at z~2.0 (six confirmed members).
This double structure is also seen in the photometric redshift analysis of a
sample of 127 galaxies located inside a circular region of 1'-radius containing
the five Herschel/SPIRE sources, where we found a double-peaked excess of
galaxies at z~1.7 and z~2.0 with respect to the surrounding region. These
results suggest that PHz G95.5-61.6 corresponds to two accreting nodes, not
physically linked to one another, embedded in the large scale structure of the
Universe at z~2 and along the same line-of-sight. In conclusion, the data,
methods and results illustrated in this pilot project confirm that Planck data
can be used to detect the emission from clustered, dusty star forming galaxies
at high-z, and, thus, to pierce through the early growth of cluster-scale
structures.Comment: 15 pages, 13 figures. Accepted for publication in Astronomy and
Astrophysic
The Implementation of Teleconsultations in a Physiotherapy Service During COVID-19 Pandemic in Brazil: A Case Report
Introduction: The Brazilian Council of Physiotherapy and Occupational Therapy regulated the use of teleconsultation during the COVID-19 pandemic, creating uncertainty about its use in Brazil. Objective: To describe the experience of teleconsultations during the COVID-19 pandemic. Methods: Four patients participated in the study with the following diagnoses: Parkinson’s disease, stroke, peripheral facial paralysis, and tibial plateau fracture. Patients underwent up to 10 physiotherapy sessions via digital tools. The 5-A self-management tool (Assess, Advise, Agree, Assist, Arrange) guided the sessions. Results: The teleconsultation type varied between synchronous (n = 1; 25%); asynchronous (n = 2; 50%) and synchronous/asynchronous (n = 1; 25%). There was 75% (n = 3) adherence and one withdrawal (25%). As the benefits of teleconsultations, the patients pointed out the convenience, maintenance of the exercises, and contact with the professional. The reported limitations were the lack of the use of physiotherapeutic devices. Conclusion: Teleconsultations contribute to the continuity of physiotherapy treatment during social isolation. Adherence to treatment was facilitated by access to the technology and by offering patients the choice of teleconsultation type.
 
Documentación sobre la industria del turismo y su relevancia en el Valle y la Sierra de Ahuisculco
PAP 1P02: “San Pedro de Valencia: renovación urbana, saneamiento ambiental y emprendimientos turísticos” es un proyecto activo que mantiene el ITESO en el Valle de Mazatepec, ubicado a unos 42 km de Guadalajara. La idea del proyecto es darle
acompañamiento a una sociedad que buscó ayuda para poder denunciar los malos usos del agua en la zona, y las afectaciones que este descuido les ha traído, por ejemplo, al sector turístico, del cual, dependen muchas familias. Dentro del PAP se crean subproyectos. Primero, para dirigir a los estudiantes a los proyectos correspondientes según su área de
conocimiento, y segundo, para poder dar atención a problemas más específicos.
Para el periodo de primavera 2022, nosotros nos encargamos del proyecto denominado “rutas solidarias”. La idea de este subproyecto consistió en recolectar la mayor cantidad de información y datos posibles a través de entrevistas con actores clave del Valle y la Sierra. También poder registrar el sentir de distintas personas locales respecto al hecho de que nosotros tenemos la intención de que la región sea turísticamente explotada. Esto para poder reflexionar si el proyecto es funcional para la comunidad. La recolección de información y datos se llevó a cabo para sintetizarla y convertirla en productos pedagógicos, para después, a través de distintos mecanismos de organización de las comunidades, gobierno y privados, divulgarla para que llegue a todos los potenciales turistas, con el fin de crear un flujo constante de personas y promover el dinamismo en la economía local.
Se confirmó la hipótesis con la que se empezó el proyecto: la industria del turismo ha venido en constante decadencia. La pandemia por el virus Covid19 empeoró la situación y colocó en un contexto crítico a muchas familias que han dependido del turismo durante muchos años.ITESO, A.C
Probing the structure and dynamics of molecular clusters using rotational wavepackets
The chemical and physical properties of molecular clusters can heavily depend
on their size, which makes them very attractive for the design of new materials
with tailored properties. Deriving the structure and dynamics of clusters is
therefore of major interest in science. Weakly bound clusters can be studied
using conventional spectroscopic techniques, but the number of lines observed
is often too small for a comprehensive structural analysis. Impulsive alignment
generates rotational wavepackets, which provides simultaneous information on
structure and dynamics, as has been demonstrated successfully for isolated
molecules. Here, we apply this technique for the firsttime to clusters
comprising of a molecule and a single helium atom. By forcing the population of
high rotational levels in intense laser fields we demonstrate the generation of
rich rotational line spectra for this system, establishing the highly
delocalised structure and the coherence of rotational wavepacket propagation.
Our findings enable studies of clusters of different sizes and complexity as
well as incipient superfluidity effects using wavepacket methods.Comment: 5 pages, 6 figure
Post-stroke motor and functional evaluations - A clinical correlation using Fugl-Meyer assessment scale, Berg balance scale and Barthel index
Stroke is one of the major causes of morbidity and mortality. Sequels deriving from this event may lead to motor disability and from mild to severe deficits. In order to better classify sensory-motor dysfunction, balance and ability to perform activities of daily living, quantitative and qualitative evaluation scales have been used. Objective: To correlate the scales Fugl-Meyer assessment scale, Berg balance scale and Barthel index. Twenty subjects with sequel after a single, unilateral stroke in chronic phase (> 6 months post ictus) were evaluated for about one hour. Results: Barthel scale was statistically related to the total motor score of Fugl-Meyer assessment (r = 0.597, p = 0.005). The lower limb section at Fugl-Meyer had positive correlation with Berg scale (r = 0.653, p = 0.002) and with the balance section of Fugl-Meyer own scale (r = 0.449, p = 0.047). Both balance scales were correlated one with other (r = 0.555, p = 0.011). Statistical divergence appeared when Barthel's index was correlated with Berg's Scale (r = 0.425, p = 0.062), and it is not statistically significant. Conclusion: The use of both quantitative and qualitative scales was shown to be a good measuring instrument for the classification of the general clinical performance of the patient, especially when positively related joint evaluations are applied.643B73173
Multi-specific calibration of the B isotope proxy in calcareous red algae for pH reconstruction
Persistent warm Mediterranean surface waters during the Roman period
Reconstruction of last millennia Sea Surface Temperature (SST) evolution is challenging due to the difficulty retrieving good resolution marine records and to the several uncertainties in the available proxy tools. In this regard, the Roman Period (1 CE to 500 CE) was particularly relevant in the socio-cultural development of the Mediterranean region while its climatic characteristics remain uncertain. Here we present a new SST reconstruction from the Sicily Channel based in Mg/Ca ratios measured on the planktonic foraminifer Globigerinoides ruber. This new record is framed in the context of other previously published Mediterranean SST records from the Alboran Sea, Minorca Basin and Aegean Sea and also compared to a north Hemisphere temperature reconstruction. The most solid image that emerges of this trans-Mediterranean comparison is the persistent regional occurrence of a distinct warm phase during the Roman Period. This record comparison consistently shows the Roman as the warmest period of the last 2 kyr, about 2 °C warmer than average values for the late centuries for the Sicily and Western Mediterranean regions. After the Roman Period a general cooling trend developed in the region with several minor oscillations. We hypothesis the potential link between this Roman Climatic Optimum and the expansion and subsequent decline of the Roman Empire
Planck's Dusty GEMS: Gravitationally lensed high-redshift galaxies discovered with the Planck survey
We present an analysis of 11 bright far-IR/submm sources discovered through a
combination of the Planck survey and follow-up Herschel-SPIRE imaging. Each
source has a redshift z=2.2-3.6 obtained through a blind redshift search with
EMIR at the IRAM 30-m telescope. Interferometry obtained at IRAM and the SMA,
and optical/near-infrared imaging obtained at the CFHT and the VLT reveal
morphologies consistent with strongly gravitationally lensed sources.
Additional photometry was obtained with JCMT/SCUBA-2 and IRAM/GISMO at 850 um
and 2 mm, respectively. All objects are bright, isolated point sources in the
18 arcsec beam of SPIRE at 250 um, with spectral energy distributions peaking
either near the 350 um or the 500 um bands of SPIRE, and with apparent
far-infrared luminosities of up to 3x10^14 L_sun. Their morphologies and sizes,
CO line widths and luminosities, dust temperatures, and far-infrared
luminosities provide additional empirical evidence that these are strongly
gravitationally lensed high-redshift galaxies. We discuss their dust masses and
temperatures, and use additional WISE 22-um photometry and template fitting to
rule out a significant contribution of AGN heating to the total infrared
luminosity. Six sources are detected in FIRST at 1.4 GHz. Four have flux
densities brighter than expected from the local far-infrared-radio correlation,
but in the range previously found for high-z submm galaxies, one has a deficit
of FIR emission, and 6 are consistent with the local correlation. The global
dust-to-gas ratios and star-formation efficiencies of our sources are
predominantly in the range expected from massive, metal-rich, intense,
high-redshift starbursts. An extensive multi-wavelength follow-up programme is
being carried out to further characterize these sources and the intense
star-formation within them.Comment: A&A accepte
Possible observation of parametrically amplified coherent phasons in K0.3MoO3 using time-resolved extreme-ultraviolet ARPES
We use time- and angle-resolved photoemission spectroscopy (tr-ARPES) in the
Extreme Ultraviolet (EUV) to measure the time- and momentum-dependent
electronic structure of photo-excited K0.3MoO3. Prompt depletion of the Charge
Density Wave (CDW) condensate launches coherent oscillations of the amplitude
mode, observed as a 1.7-THz-frequency modulation of the bonding band position.
In contrast, the anti-bonding band oscillates at about half this frequency. We
attribute these oscillations to coherent excitation of phasons via parametric
amplification of phase fluctuations.Comment: 4 figure
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